The Theater: New Plays on Broadway, Nov. 16, 1959

The Highest Tree (by Dore Schary) is a disaster of good intentions. The
author of Sunrise at Campobello is writing in protest: he is one of the
people who, aware of the danger of strontium 90 in the air, would ban
further nuclear test explosions. Playwright Schary's central figure,
Dr. Aaron Cornish (Kenneth MacKenna) is a famous atomic scientist
stricken, very possibly because of his nuclear activities, with acute
leukemia. In any case, after self-searching, he determines to spend
what months remain to him urging an end to nuclear-bomb tests.